The Genuine Porsche Brake Pad Kit - 471591 is a comprehensive set of products designed to service the brakes of a car. It includes a set of brake pads, brake rotors, and brake calipers. The brake pads are an essential component of the braking system, providing friction against the brake rotors to slow down or stop the vehicle. The brake rotors, also known as brake discs, are the circular metal discs that the brake pads press against. The brake calipers are the mechanisms that hold the brake pads and apply pressure to them, causing them to make contact with the brake rotors. This kit is specifically designed for Porsche vehicles and is made with high-quality materials to ensure optimal performance and safety.